首页|远程激发荧光陶瓷型白光LED散热器设计与性能分析

远程激发荧光陶瓷型白光LED散热器设计与性能分析

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作为新型光转换元件,荧光陶瓷是照明技术的关键材料.然而,陶瓷散热问题严重制约了器件的发展.为此,设计了一种远程激发荧光陶瓷型白光LED用散热器,对LED芯片和陶瓷进行独立散热.通过三维软件建立散热器的结构模型,并导入模拟软件进行芯片和陶瓷的散热仿真,得到芯片基板和陶瓷的温度分别为90.71和68.39 ℃.将风扇移除后,仿真获得的芯片基板和陶瓷的温度分别为105.18和100.71 ℃.最后,将散热器的三维模型加工成实物,并将自制YAG∶Ce陶瓷与150 W等级的蓝光LED封装.通过对白光LED光热性能测试,获得的显色指数为61.7,相对色温为4 867 K,基板温度为108.30 ℃.实验数值与仿真温度相差约3.00 ℃,证实了模拟结果的准确性.为远程激发型白光LED散热设计提供了技术参考.
Design and performance analysis of remote excitation ceramic phosphor white LED radiator
As a new generation of optical translator unit,phosphor ceramics are the key materials of lighting technology.However,the phosphor ceramics face serious heat dissipation problem,which greatly restricts their application in white LED.A radiator for remote excitation ceramic phosphor white LED was proposed to dissipate heat independently for LED chips and ceramics in this study.The mechanical structure model of the heat sink was established by the 3D software,and the heat dissipation of LED chip and ceramic phosphor were simulated.The temperature of LED chip substrate and ceramic were 90.71 and 68.39 ℃,respectively.After the fan was removed,and the temperature of the chip substrate and ceramic were 105.18 and 100.71 ℃,respectively.Finally,the designed three dimensional structural model of the radiator was manufactured,and a white LED device was established by encapsulating the radiator,the fabricated YAG∶Ce ceramic and a 150 W grade LED chip(460 nm).The obtained color rendering index,relative color temperature and substrate temperature of the white LED were 61.7,4 867 K,and 108.30 ℃,respectively.The temperature difference between the experimental and simulation results was 3.00 ℃,verifying the numerical simulation accuracy.This study provides technical references for the design of the remote excitation white LED heat dissipation devices.

remote excitationmoderadiator designYAG∶Ce ceramicnumerical simulationwhite LED

郑喜贵、王桂录、朱永刚、李星灿、邵晨阳、马跃龙

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郑州科技学院机械工程学院,河南郑州 450064

郑州科技学院河南省数字化智能装备工程研究中心,河南郑州 450064

河南工业大学机电工程学院,河南郑州 450001

嵩山实验室,河南郑州 450046

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远程激发模式 散热器设计 YAG∶Ce陶瓷 数值模拟 白光LED

河南省高等学校重点科研资助项目河南省高等学校重点科研资助项目博士后科研启动基金资助项目校自然科学资助项目河南省重点研发与推广专项资助项目河南省重点研发与推广专项资助项目嵩山实验室预研资助项目

21B46001621B4600192145003331401431222102210023232102211074YYJC072022020

2024

10.13738/j.issn.1671-8097.023083

热科学与技术
大连理工大学

热科学与技术

CSTPCD北大核心
影响因子：0.463
ISSN：1671-8097
年,卷(期)：2024.23(2)